1 # Copyright (C) 2014, Eric Wong <normalperson@yhbt.net> and all contributors
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
3 package PublicInbox::View;
6 use URI::Escape qw/uri_escape_utf8/;
7 use Date::Parse qw/str2time/;
8 use Encode qw/find_encoding/;
9 use Encode::MIME::Header;
10 use Email::MIME::ContentType qw/parse_content_type/;
11 use PublicInbox::Hval;
12 use PublicInbox::MID qw/mid_clean mid_compressed mid2path/;
16 # TODO: make these constants tunable
17 use constant MAX_INLINE_QUOTED => 12; # half an 80x24 terminal
18 use constant MAX_TRUNC_LEN => 72;
19 use constant PRE_WRAP => "<pre\nstyle=\"white-space:pre-wrap\">";
20 use constant T_ANCHOR => '#u';
22 *ascii_html = *PublicInbox::Hval::ascii_html;
24 my $enc_utf8 = find_encoding('UTF-8');
28 my ($class, $mime, $full_pfx, $footer, $srch) = @_;
29 if (defined $footer) {
30 $footer = "\n" . $footer;
34 headers_to_html_header($mime, $full_pfx, $srch) .
35 multipart_text_as_html($mime, $full_pfx) .
36 '</pre><hr />' . PRE_WRAP .
37 html_footer($mime, 1, $full_pfx, $srch) . $footer .
38 '</pre></body></html>';
42 my ($class, $mime, $full_pfx) = @_;
44 PRE_WRAP . multipart_text_as_html($mime, $full_pfx) . '</pre>';
47 # this is already inside a <pre>
48 # state = [ time, seen = {}, first_commit, page_nr = 0 ]
50 my (undef, $mime, $level, $state) = @_;
51 my ($srch, $seen, $first_commit) = @$state;
52 my $midx = $state->[3]++;
53 my ($prev, $next) = ($midx - 1, $midx + 1);
56 my $enc_msg = enc_for($mime->header("Content-Type"));
57 my $subj = $mime->header('Subject');
58 my $header_obj = $mime->header_obj;
60 my $mid_raw = $header_obj->header_raw('Message-ID');
61 my $id = anchor_for($mid_raw);
62 $seen->{$id} = "#$id"; # save the anchor for later
64 my $mid = PublicInbox::Hval->new_msgid($mid_raw);
65 my $from = PublicInbox::Hval->new_oneline($mime->header('From'))->raw;
66 my @from = Email::Address->parse($from);
67 $from = $from[0]->name;
68 (defined($from) && length($from)) or $from = $from[0]->address;
70 $from = PublicInbox::Hval->new_oneline($from)->as_html;
71 $subj = PublicInbox::Hval->new_oneline($subj)->as_html;
72 my $pfx = (' ' x $level);
73 my $root_anchor = $seen->{root_anchor};
75 my $more = 'permalink';
81 my $href = $mid->as_href;
82 my $irt = $header_obj->header_raw('In-Reply-To');
83 my ($anchor_idx, $anchor, $t_anchor);
85 $anchor_idx = anchor_for($irt);
86 $anchor = $seen->{$anchor_idx};
93 $subj = "<a\nhref=\"${path}t/$href.html#u\">$subj</a>";
95 if ($root_anchor && $root_anchor eq $id) {
96 $subj = "<u\nid=\"u\">$subj</u>";
99 my $ts = $mime->header('X-PI-TS');
100 my $fmt = '%Y-%m-%d %H:%M UTC';
101 $ts = POSIX::strftime($fmt, gmtime($ts));
103 $rv .= "$pfx<b\nid=\"$id\">$subj</b>\n$pfx";
104 $rv .= "- by $from @ $ts - ";
105 $rv .= "<a\nid=\"s$midx\"\nhref=\"#s$next\">next</a>";
107 $rv .= "/<a\nhref=\"#s$prev\">prev</a>";
111 my $mhref = "${path}m/$href.html";
112 my $fhref = "${path}f/$href.html";
113 # scan through all parts, looking for displayable text
114 $mime->walk_parts(sub {
115 $rv .= index_walk($_[0], $pfx, $enc_msg, $part_nr, $fhref,
121 $rv .= "\n$pfx<a\nhref=\"$mhref\">$more</a> ";
122 my $txt = "${path}m/$href.txt";
123 $rv .= "<a\nhref=\"$txt\">raw</a> ";
124 $rv .= html_footer($mime, 0);
127 unless (defined $anchor) {
128 my $v = PublicInbox::Hval->new_msgid($irt);
130 $anchor = "${path}m/$v.html";
131 $seen->{$anchor_idx} = $anchor;
133 $rv .= " <a\nhref=\"$anchor\">parent</a>";
137 $rv .= " <a\nhref=\"${path}t/$href.html$t_anchor\">" .
145 my (undef, $ctx, $foot, $srch) = @_;
146 my $mid = mid_compressed($ctx->{mid});
147 my $res = $srch->get_thread($mid);
149 my $msgs = load_results($ctx, $res);
150 my $nr = scalar @$msgs;
151 return $rv if $nr == 0;
152 require PublicInbox::Thread;
153 my $th = PublicInbox::Thread->new(@$msgs);
155 $th->order(*PublicInbox::Thread::sort_ts);
156 my $state = [ $srch, { root_anchor => anchor_for($mid) }, undef, 0 ];
157 thread_entry(\$rv, $state, $_, 0) for $th->rootset;
158 my $final_anchor = $state->[3];
159 my $next = "<a\nid=\"s$final_anchor\">";
161 if ($final_anchor == 1) {
162 $next .= 'only message in thread';
164 $next .= 'end of thread';
166 $next .= ", back to <a\nhref=\"../\">index</a>\n";
168 $rv .= "</pre><hr />" . PRE_WRAP . $next . $foot . "</pre>";
171 sub subject_path_html {
172 my (undef, $ctx, $foot, $srch) = @_;
173 my $path = $ctx->{subject_path};
174 my $res = $srch->get_subject_path($path);
176 my $msgs = load_results($ctx, $res);
177 my $nr = scalar @$msgs;
178 return $rv if $nr == 0;
179 require PublicInbox::Thread;
180 my $th = PublicInbox::Thread->new(@$msgs);
182 $th->order(*PublicInbox::Thread::sort_ts);
183 my $state = [ $srch, { root_anchor => 'dummy' }, undef, 0 ];
184 thread_entry(\$rv, $state, $_, 0) for $th->rootset;
185 my $final_anchor = $state->[3];
186 my $next = "<a\nid=\"s$final_anchor\">end of thread</a>\n";
188 $rv .= "</pre><hr />" . PRE_WRAP . $next . $foot . "</pre>";
191 # only private functions below.
194 my ($part, $pfx, $enc_msg, $part_nr, $fhref, $more) = @_;
196 return $rv if $part->subparts; # walk_parts already recurses
197 my $ct = $part->content_type;
199 # account for filter bugs...
200 return if defined $ct && $ct =~ m!\btext/[xh]+tml\b!i;
202 my $enc = enc_for($ct, $enc_msg);
205 my $fn = $part->filename;
206 defined($fn) or $fn = "part #" . ($part_nr + 1);
207 $rv .= $pfx . add_filename_line($enc->decode($fn));
210 my $s = add_text_body_short($enc, $part, $part_nr, $fhref);
212 # drop the remainder of git patches, they're usually better
213 # to review when the full message is viewed
214 $s =~ s!^---+\n.*\z!!ms and $$more = 'more...';
217 $s =~ s/^-- \n.*\z//ms and $$more = 'more...';
219 # kill any leading or trailing whitespace lines
227 # kill per-line trailing whitespace
228 $s =~ s/[ \t]+$//sgm;
236 my ($ct, $default) = @_;
237 $default ||= $enc_utf8;
238 defined $ct or return $default;
239 my $ct_parsed = parse_content_type($ct);
241 if (my $charset = $ct_parsed->{attributes}->{charset}) {
242 my $enc = find_encoding($charset);
249 sub multipart_text_as_html {
250 my ($mime, $full_pfx, $srch) = @_;
253 my $enc_msg = enc_for($mime->header("Content-Type"));
255 # scan through all parts, looking for displayable text
256 $mime->walk_parts(sub {
258 return if $part->subparts; # walk_parts already recurses
259 my $ct = $part->content_type;
261 # account for filter bugs...
262 return if defined $ct && $ct =~ m!\btext/[xh]+tml\b!i;
264 my $enc = enc_for($ct, $enc_msg);
267 my $fn = $part->filename;
268 defined($fn) or $fn = "part #" . ($part_nr + 1);
269 $rv .= add_filename_line($enc->decode($fn));
272 if (defined $full_pfx) {
273 $rv .= add_text_body_short($enc, $part, $part_nr,
276 $rv .= add_text_body_full($enc, $part, $part_nr);
278 $rv .= "\n" unless $rv =~ /\n\z/s;
285 sub add_filename_line {
291 $pad x= ($len/2) if ($len > 0);
292 "$pad " . ascii_html($fn) . " $pad\n";
295 my $LINK_RE = qr!\b((?:ftp|https?|nntp)://[@\w\+\&\?\.\%\;/#=-]+)!;
298 # no newlines added here since it'd break the splitting we do
300 $_[0] =~ s!$LINK_RE!<a href="$1">$1</a>!g;
303 sub add_text_body_short {
304 my ($enc, $part, $part_nr, $full_pfx) = @_;
306 my $s = ascii_html($enc->decode($part->body));
308 $s =~ s!^((?:(?:>[^\n]*)\n)+)!
310 my @lines = split(/\n/, $cur);
311 if (@lines > MAX_INLINE_QUOTED) {
312 # show a short snippet of quoted text
313 $cur = join(' ', @lines);
314 $cur =~ s/^>\s*//;
316 my @sum = split(/\s+/, $cur);
319 my $tmp = shift(@sum);
320 my $len = length($tmp) + length($cur);
321 if ($len > MAX_TRUNC_LEN) {
326 } while (@sum && length($cur) < MAX_TRUNC_LEN);
328 "> <<a\nhref=\"${full_pfx}#q${part_nr}_" . $n++ .
329 "\">$cur<\/a>>\n";
337 sub add_text_body_full {
338 my ($enc, $part, $part_nr) = @_;
340 my $s = ascii_html($enc->decode($part->body));
342 $s =~ s!^((?:(?:>[^\n]*)\n)+)!
344 my @lines = split(/\n/, $cur);
345 if (@lines > MAX_INLINE_QUOTED) {
346 "<a\nid=q${part_nr}_" . $n++ . ">$cur</a>";
354 sub headers_to_html_header {
355 my ($mime, $full_pfx, $srch) = @_;
359 my $header_obj = $mime->header_obj;
360 my $mid = $header_obj->header_raw('Message-ID');
361 $mid = PublicInbox::Hval->new_msgid($mid);
362 my $mid_href = $mid->as_href;
363 foreach my $h (qw(From To Cc Subject Date)) {
364 my $v = $mime->header($h);
365 defined($v) && length($v) or next;
366 $v = PublicInbox::Hval->new_oneline($v);
369 my @from = Email::Address->parse($v->raw);
370 $title[1] = ascii_html($from[0]->name);
371 } elsif ($h eq 'Subject') {
372 $title[0] = $v->as_html;
374 $rv .= "$h: <a\nhref=\"../t/$mid_href.html\">";
375 $rv .= $v->as_html . "</a>\n";
379 $rv .= "$h: " . $v->as_html . "\n";
383 $rv .= 'Message-ID: <' . $mid->as_html . '> ';
384 $mid_href = "../m/$mid_href" unless $full_pfx;
385 $rv .= "(<a\nhref=\"$mid_href.txt\">raw</a>)\n";
387 my $irt = $header_obj->header_raw('In-Reply-To');
389 my $v = PublicInbox::Hval->new_msgid($irt);
390 my $html = $v->as_html;
391 my $href = $v->as_href;
392 $rv .= "In-Reply-To: <";
393 $rv .= "<a\nhref=\"$href.html\">$html</a>>\n";
396 my $refs = $header_obj->header_raw('References');
398 # avoid redundant URLs wasting bandwidth
400 $seen{mid_clean($irt)} = 1 if defined $irt;
402 my @raw_refs = ($refs =~ /<([^>]+)>/g);
403 foreach my $ref (@raw_refs) {
406 push @refs, linkify_ref($ref);
410 $rv .= 'References: '. join(' ', @refs) . "\n";
416 ("<html><head><title>". join(' - ', @title) .
417 '</title></head><body>' . PRE_WRAP . $rv);
421 my ($mime, $standalone, $full_pfx, $srch) = @_;
422 my %cc; # everyone else
423 my $to; # this is the From address
425 foreach my $h (qw(From To Cc)) {
426 my $v = $mime->header($h);
427 defined($v) && length($v) or next;
428 my @addrs = Email::Address->parse($v);
429 foreach my $recip (@addrs) {
430 my $address = $recip->address;
431 my $dst = lc($address);
432 $cc{$dst} ||= $address;
436 Email::Address->purge_cache if $standalone;
438 my $subj = $mime->header('Subject') || '';
439 $subj = "Re: $subj" unless $subj =~ /\bRe:/;
440 my $mid = $mime->header_obj->header_raw('Message-ID');
441 my $irt = uri_escape_utf8($mid);
443 $to = uri_escape_utf8($to);
444 $subj = uri_escape_utf8($subj);
446 my $cc = uri_escape_utf8(join(',', sort values %cc));
447 my $href = "mailto:$to?In-Reply-To=$irt&Cc=${cc}&Subject=$subj";
449 my $idx = $standalone ? " <a\nhref=\"../\">index</a>" : '';
451 $irt = $mime->header_obj->header_raw('In-Reply-To') || '';
452 $mid = mid_compressed(mid_clean($mid));
453 my $t_anchor = length $irt ? T_ANCHOR : '';
454 $idx = " <a\nhref=\"../t/$mid.html$t_anchor\">".
455 "threadlink</a>$idx";
456 my $res = $srch->get_followups($mid);
457 if (my $c = $res->{count}) {
458 $c = $c == 1 ? '1 followup' : "$c followups";
460 $res->{srch} = $srch;
461 thread_followups(\$idx, $mime, $res);
463 $idx .= "\n(no followups, yet)\n";
466 $irt = PublicInbox::Hval->new_msgid($irt);
467 $irt = $irt->as_href;
468 $irt = "<a\nhref=\"$irt\">parent</a> ";
470 $irt = ' ' x length('parent ');
476 "$irt<a\nhref=\"" . ascii_html($href) . '">reply</a>' . $idx;
480 my $v = PublicInbox::Hval->new_msgid($_[0]);
481 my $html = $v->as_html;
482 my $href = $v->as_href;
483 "<<a\nhref=\"$href.html\">$html</a>>";
489 if ($id !~ /\A[a-f0-9]{40}\z/) {
490 $id = mid_compressed(mid_clean($id), 1);
496 my ($dst, $root, $node, $level) = @_;
497 # $root = [ Root Message-ID, \%seen, $srch ];
498 my $pfx = ' ' x $level;
500 if (my $x = $node->message) {
501 my $mid = $x->header('Message-ID');
502 if ($root->[0] ne $mid) {
503 my $s = $x->header('Subject');
504 my $h = $root->[2]->subject_path($s);
505 if ($root->[1]->{$h}) {
508 $root->[1]->{$h} = 1;
509 $s = PublicInbox::Hval->new($s);
512 my $m = PublicInbox::Hval->new_msgid($mid);
513 my $f = PublicInbox::Hval->new($x->header('X-PI-From'));
514 my $d = PublicInbox::Hval->new($x->header('X-PI-Date'));
515 $m = $m->as_href . '.html';
517 $d = $d->as_html . ' UTC';
518 if (length($s) == 0) {
519 $$dst .= "` <a\nhref=\"$m\">$f @ $d</a>\n";
521 $$dst .= "` <a\nhref=\"$m\">$s</a>\n" .
526 simple_dump($dst, $root, $node->child, $level + 1) if $node->child;
527 simple_dump($dst, $root, $node->next, $level) if $node->next;
530 sub thread_followups {
531 my ($dst, $root, $res) = @_;
532 my @msgs = map { $_->mini_mime } @{$res->{msgs}};
533 require PublicInbox::Thread;
534 $root->header_set('X-PI-TS', '0');
535 my $th = PublicInbox::Thread->new($root, @msgs);
537 $th->order(*PublicInbox::Thread::sort_ts);
538 my $srch = $res->{srch};
539 my $subj = $srch->subject_path($root->header('Subject'));
540 my %seen = ($subj => 1);
541 $root = [ $root->header('Message-ID'), \%seen, $srch ];
542 simple_dump($dst, $root, $_, 0) for $th->rootset;
545 sub thread_html_head {
547 my $s = PublicInbox::Hval->new_oneline($mime->header('Subject'));
549 "<html><head><title>$s</title></head><body>" . PRE_WRAP
554 my ($dst, $state, $node, $level) = @_;
555 # $state = [ $search_res, $seen, undef, 0 (msg_nr) ];
556 # $seen is overloaded with 3 types of fields:
557 # 1) "root_anchor" => anchor_for(Message-ID),
558 # 2) seen subject hashes: sha1(subject) => 1
559 # 3) anchors hashes: "#$sha1_hex" (same as $seen in index_entry)
560 if (my $mime = $node->message) {
561 if (length($$dst) == 0) {
562 $$dst .= thread_html_head($mime);
564 $$dst .= index_entry(undef, $mime, $level, $state);
566 thread_entry($dst, $state, $node->child, $level + 1) if $node->child;
567 thread_entry($dst, $state, $node->next, $level) if $node->next;
571 my ($ctx, $res) = @_;
573 require PublicInbox::GitCatFile;
574 my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
576 while (my $smsg = shift @{$res->{msgs}}) {
578 my $path = mid2path($m);
580 # FIXME: duplicated code from Feed.pm
582 my $str = $git->cat_file("HEAD:$path");
583 Email::MIME->new($str);
586 my $t = eval { str2time($mime->header('Date')) };
587 defined($t) or $t = 0;
588 $mime->header_set('X-PI-TS', $t);